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Google: Gemini 3 Flash Preview vs OpenAI: GPT-5 Mini

Summary

Gemini 3 Flash Preview vs GPT-5 Mini benchmark comparison: GPT-5 Mini leads on average score with 8.5 vs 7.4. Gemini 3 Flash Preview has the lower benchmark cost at $0.111 vs $0.159. Gemini 3 Flash Preview is faster at 5.76s vs 23.64s, with pass rates of 79.4% vs 63.5%.

Recommended model: Gemini 3 Flash Preview - It offers the best overall trade-off: a competitive score (7.4), lower cost than GPT-5 Mini, and balanced response time.

Last updated at: 2026-06-12

Metric Gemini 3 Flash Preview Gemini 3 Flash Preview low Release: 2025-12-17 GPT-5 Mini GPT-5 Mini medium Release: 2025-08-07
Score 7.4 8.5
Rank #53 #19
Reliability 10.0 10.0
Consistency 9.2 9.1
Tests Correct
Attempt pass rate 79.4% 63.5%
Flaky tests 2 2
Total Runs 63 63
Cost per result 0.689 1.319
Total Cost $0.111 $0.159
Input Price $0.500 / 1M $0.250 / 1M
Output Price $3.000 / 1M $2.000 / 1M
Total Input Tokens 36,769 37,100
Output Tokens 2,076 6,801
Reasoning Tokens 28,518 67,690
Response Time (avg) 5.76s 23.64s
Response Time (max) 14.72s 88.15s
Response Time (total) 120.93s 496.44s

Generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#53 Gemini 3 Flash Preview

low
Cost
$0.007
Time
12.1s
Tokens
2,289 tok

#19 GPT-5 Mini

medium
Cost
$0.007
Time
42.9s
Tokens
3,432 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.48s 500 281 3,082
GPT-5 Mini 7.1 7.6 66.7% 1 13.86s 606 1,715 6,378
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 5.8 7.2 44.4% 1 6.00s 8,122 456 7,421
GPT-5 Mini 10.0 10.0 100.0% 0 27.63s 7,302 658 17,152
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 3.0 10.0 0.0% 0 3.27s 12,860 326 0
GPT-5 Mini 10.0 10.0 100.0% 0 88.15s 14,118 754 11,520
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 9.40s 7,261 279 3,656
GPT-5 Mini 10.0 10.0 100.0% 0 12.58s 7,140 453 3,200
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 5.3 7.2 44.4% 1 8.05s 645 12 6,410
GPT-5 Mini 3.6 7.2 22.2% 1 44.63s 515 293 14,016
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 3.68s 492 120 981
GPT-5 Mini 4.5 10.0 0.0% 0 13.50s 477 349 1,856
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 9.9 10.0 100.0% 0 7.02s 621 71 2,752
GPT-5 Mini 10.0 10.0 100.0% 0 11.59s 660 310 3,968
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 5.77s 562 288 3,168
GPT-5 Mini 5.6 9.8 33.3% 0 15.20s 642 1,622 6,144
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.99s 5,550 234 415
GPT-5 Mini 10.0 10.0 100.0% 0 18.64s 5,445 487 1,600
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 2.75s 156 9 633
GPT-5 Mini 3.0 10.0 0.0% 0 9.99s 195 160 1,856

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